.page3_content{
    width: 300%;
    height: 100%;
    background: url(../img/p3/bj.png) no-repeat;
    background-size: 100% 100%;
}
.page3_content>b{
    width: 300px;
    height: 40px;
    position: absolute;
    top: 80%;
    left: 20%;
    text-align: center;
    margin-left: -150px;
    margin-top: -20px;
    opacity: 0;
    transition: all 1s ease;
}
.page3_content>strong{
    width: 300px;
    height: 40px;
    position: absolute;
    top: 80%;
    left: 60%;
    text-align: center;
    margin-left: -150px;
    margin-top: -20px;
    opacity: 0;
    transition: all 1s ease;
}

#page3>img{
    width: 120px;
    height: 60px;
    position: absolute;
    bottom: 26%;
    left: 5%;
    transform-origin: bottom bottom;
    animation: page3_car 1s infinite linear;
}
@keyframes page3_car{
    0%{height: 60px;}
    50%{height: 66px;}
    100%{height: 60px;}
}